Juijian - Class (ex Yugoslavian Dubronik Class)
Destroyer
as laid down:
Displacement:
1.928 t light; 1.999 t standard; 2.196 t normal; 2.354 t full load
Dimensions:
Length overall / water x beam x draught
323,47 ft / 320,00 ft x 40,00 ft x 14,00 ft (normal load)
98,59 m / 97,54 m x 12,19 m x 4,27 m
Armament:
6 - 4,76" / 121 mm guns (4 mounts), 54,05lbs / 24,52kg shells, 1918 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 0,51" / 13,0 mm guns in single mounts, 0,07lbs / 0,03kg shells, 1918 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 325 lbs / 147 kg
Shells per gun, main battery: 150
6 - 18,0" / 457,2 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 51.155 shp / 38.162 Kw = 33,00 kts
Range 8.000nm at 10,00 kts
Bunker at max displacement = 356 tons
Complement:
159 - 208
Cost:
£0,569 million / $2,276 million
Distribution of weights at normal displacement:
Armament: 41 tons, 1,8%
Machinery: 1.307 tons, 59,5%
Hull, fittings & equipment: 531 tons, 24,2%
Fuel, ammunition & stores: 269 tons, 12,2%
Miscellaneous weights: 50 tons, 2,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
399 lbs / 181 Kg = 7,4 x 4,8 " / 121 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,37
Metacentric height 2,2 ft / 0,7 m
Roll period: 11,3 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0,31
Seaboat quality (Average = 1.00): 0,76
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,429
Length to Beam Ratio: 8,00 : 1
'Natural speed' for length: 17,89 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 10,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19,68 ft / 6,00 m
- Forecastle (20%): 19,20 ft / 5,85 m
- Mid (50%): 19,20 ft / 5,85 m (12,50 ft / 3,81 m aft of break)
- Quarterdeck (15%): 12,50 ft / 3,81 m
- Stern: 12,50 ft / 3,81 m
- Average freeboard: 15,89 ft / 4,84 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 208,3%
- Above water (accommodation/working, high = better): 114,4%
Waterplane Area: 8.032 Square feet or 746 Square metres
Displacement factor (Displacement / loading): 54%
Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,44
- Longitudinal: 1,99
- Overall: 0,51
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is adequate
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
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as refitted:
Displacement:
1.861 t light; 1.926 t standard; 2.196 t normal; 2.413 t full load
Dimensions:
Length overall / water x beam x draught
323,47 ft / 320,00 ft x 40,00 ft x 14,00 ft (normal load)
98,59 m / 97,54 m x 12,19 m x 4,27 m
Armament:
4 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1940 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
4 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1940 Model
Machine guns in deck mounts
on side, evenly spread, 2 raised mounts
Weight of broadside 150 lbs / 68 kg
Shells per gun, main battery: 250
6 - 21,0" / 533 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 53.945 shp / 40.243 Kw = 33,40 kts
Range 8.000nm at 13,00 kts
Bunker at max displacement = 486 tons
Complement:
159 - 208
Cost:
£0,496 million / $1,982 million
Distribution of weights at normal displacement:
Armament: 19 tons, 0,9%
Machinery: 1.192 tons, 54,3%
Hull, fittings & equipment: 600 tons, 27,3%
Fuel, ammunition & stores: 336 tons, 15,3%
Miscellaneous weights: 50 tons, 2,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
608 lbs / 276 Kg = 17,2 x 4,1 " / 105 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,37
Metacentric height 2,2 ft / 0,7 m
Roll period: 11,4 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0,15
Seaboat quality (Average = 1.00): 0,75
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,429
Length to Beam Ratio: 8,00 : 1
'Natural speed' for length: 17,89 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 10,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19,68 ft / 6,00 m
- Forecastle (20%): 19,20 ft / 5,85 m
- Mid (50%): 19,20 ft / 5,85 m (12,50 ft / 3,81 m aft of break)
- Quarterdeck (15%): 12,50 ft / 3,81 m
- Stern: 12,50 ft / 3,81 m
- Average freeboard: 15,89 ft / 4,84 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 184,7%
- Above water (accommodation/working, high = better): 101,6%
Waterplane Area: 8.032 Square feet or 746 Square metres
Displacement factor (Displacement / loading): 71%
Structure weight / hull surface area: 40 lbs/sq ft or 197 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,53
- Longitudinal: 2,37
- Overall: 0,61
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Breakdown of Miscellaneous Weight:
- 15 tons for hydrophone
- 15 tons for 2 DC rails (each 7.5 tons)
- 20 tons for 80 DCs (each 250 kg)
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Ships in Class:
HICMS Juijang; laid down 1918, refitted 1940
HICMS Jujong; laid down 1918, refitted 1940